What two numbers multiply to 680 and add up to -681?

Here we answer the question: "What two numbers multiply to 680 and add up to -681?"

The answer to your question is:

-680 and -1

Below we illustrate and prove that -680 and -1 multiply to 680 and add up to -681:

-680 × -1 = 680
-680 + -1 = -681

Are you asking because you are trying to figure out how to factor the following quadratic equation?

x² - 681x + 680 = 0

If so, the solution to factor the quadratic equation above is:

(x - 680 ) (x - 1)

To summarize, since -680 and -1 multiply to 680 and add up -681, you know that the following is true:

x² - 681x + 680 = (x - 680 ) (x - 1)

Multiply To One Number and Add Up To Another
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